# Prospective release calendar

This is a prospective calendar for the next releases of OCaml.

This document is intended to give a very rough idea of the timeline for the next
versions of OCaml to anyone interested. However, it would be an unforeseen
accident if this prospective calendar ever matches the real release calendar.


# Main versions
(Last updated on 9 October 2025)

## OCaml 5.6.0

|    Release            | Expected (early)   | Expected (late)    | Actual      |
|-----------------------|--------------------|--------------------|-------------|
| Feature freeze        | 1st June 2026      |  1st August 2026   |             |

## OCaml 5.5.0

|    Release            | Expected (early)   | Expected (late)    | Actual      |
|-----------------------|--------------------|--------------------|-------------|
| Feature freeze        | 1st January 2026   |  (same)            |             |

## OCaml 5.4.0

|    Release            | Expected (early) | Expected (late)  | Actual          |
|-----------------------|------------------|------------------|-----------------|
| Feature freeze        | 15th April 2025  |  (same)          |  22nd April     |
| 1st beta release      | 15th May         |  15th June       |  22nd July      |
| 1st release candidate | 15th June        |  15th July       |  29th September |
| Release               | 21st June        |  1st August      |   9th October   |

## OCaml 5.3.0

|    Phase              | Expected (early) | Expected (late) | Actual           |
|-----------------------|------------------|-----------------|------------------|
| Feature freeze        | 15 August 2024   | (same)          | 25 August 2024   |
| 1st beta release      | 10th September   | 15th October    | 7th November     |
| 1st release candidate | 1st October      | 7th November    | 18th December    |
| Release               | 7th October      | 21st November   | 8 January 2025   |

# LTS version

## OCaml 4.14.3


|    Phase              | Expected (early) | Expected (late) | Actual           |
|-----------------------|------------------|-----------------|------------------|
| 1st release candidate | 2 May            | 22 May          |                  |
| Release               | 9 May            | 1 June          |                  |
